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JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Colloids Emulsion, Gel and Their properties with application

  • question_answer
    On adding few drops of dilute \[HCl\] or \[FeC{{l}_{3}}\] to freshly precipitated ferric hydroxide a red coloured colloidal solution is obtained. The phenomenon is known as [NCERT 1981; AFMC 1982; MP PMT 1989, 97]

    A)                 Peptisation        

    B)                 Dialysis

    C)                 Protective action             

    D)                 Dissolution

    Correct Answer: A

    Solution :

                    The phenomenon of converting of fresh mass into colloidal state by the action of solute or solvent is known as peptization.


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